.react_mask {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  transform: scaleX(0);
  transform-origin: top right;
  opacity: 0;
  transition: opacity .25s ease-in-out, transform .01s ease-in-out .24s;
  &.active {
    opacity: 1;
    transform: scaleX(1);
    transition: opacity .25s ease-in-out;
  }
}
